Re: Sage mode completes Rikudou mode
the thing there's is a lot of possibilities for naruto to enter both sage mode and kyuubi mode. he can do this by first entering sage mode and then going into the kyuubi mode. simple as that.
or if he want to do it the other way round, then he can just enter into the kyuubi mode and then go into sage mode.
now in battle, here is where the problem steps in. my solution to it is that, to prevent any of this complication,, he can first go into sage mode and then come into the kyuubi mode when he want's to use his most fastest and strongest attack. after which he can just resort back to the sage mode.
each of these modes has their own advantages and disadvantages. it's just up to naruto to exploit the good out of each